03 avalanche 4wd 5.3 lifted with 37s
im goin with 4.88s
8.1 injectors
243s ported and polished milled to 10.66:1 compression ratio
underdrive pulleys
cai
lts
ory
hooker aroechamber with single 3in out
a stall converter
transgo shift kit
super hold servos
nelson tune
and eventually a 100 shot and upgraded throttle body

http://store.summitracing.com/partde...5&autoview=sku

would this be a good cam for this set up

 

http://store.summitracing.com/partde...5&autoview=sku oops sorry

 

Too big for a setup like that. Go 1 step smaller

 

ok any suggestions

 

Dur @ .004" 272*/280*
Dur @ .050" 210*/218*
Lift .551/.551
Overlap 46*
Lsa 116* "ultra Torque"
Power Range 1500 To 5800
Provides Very High Torque Gains
Great Fuel Economy & Power
Light Thumpy Idle

 

Vinci 080

 

which one is better the vinci 080 or the 112?

 

IMO the MPG with that setup will be in the single digits... Might want to add a huge tranny cooler to your list...

 

. . . and a 14 bolt sf to the list as well. The 10 bolt will not last with the power and the tires combined. The tires alone are pushing the 10 bolt well past its limits in a heavy avalanche. I'm thinking that a huge tranny cooler might be a mute point too. Don't get me wrong it will help but I see a fully built 60 or a 80 in the near future. Especially when you start spraying. Those 37's create a lot of rolling mass. The 4.88's help but thats still a lot of weight at each end to get rolling and to try and stop all the time.

 

Could be a mute point...but it's more likely to be a moot point. Know what I mean?